Turbine fracturing equipment

ABSTRACT

The present invention discloses a turbine fracturing equipment, including a transporter, a turbine engine, a reduction gearbox, a transmission mechanism and a plunger pump, wherein an output end of the turbine engine is connected to one end of the reduction gearbox, the other end of the reduction gearbox is connected to the plunger pump through a transmission mechanism; the transporter is used to support the turbine engine, the reduction gearbox, the transmission mechanism and the plunger pump; the transporter includes a chassis provided with a transport section, a bearing section and a lapping section which are connected in sequence; while the turbine fracturing equipment is in a working state, the bearing section can contact with the ground, while the turbine fracturing equipment is in a transport state, the bearing section does not contact with the ground. Beneficial effects: the equipment adopts a linear connection and a special chassis design, so that the center of gravity is double lowered to guarantee its stability and safety, the structure is simpler, the investment and operation costs are decreased, the risk of total breakdown of the fracturing site is reduced, and the equipment has a good transmission performance and is suitable for continuous operation conditions with long time and heavy load.

CROSS REFERENCE TO RELATED APPLICATION

The present application claims priority to a Chinese Patent ApplicationNo. 201910894253.0, filed Sep. 10 2019. the entire contents of whichbeing incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present invention relates to the field of operation in oil and gasfields, and specifically to a turbine fracturing equipment.

BACKGROUND

In the working sites of fracturing in oil and gas fields all over theworld, the driving modes for fracturing equipment mainly include thefollowing two ways:

One driving mode is diesel engine driven, specifically a diesel engineis connected to a transmission through a transmission shaft to drive thefracturing plunger pump to work. In other words, a diesel engine is usedas the power source, a transmission and a transmission shaft are used asthe transmission devices, and a fracturing plunger pump is used as theactuating element.

This configuration mode has the following disadvantages:

(1) Large volume and heavy weight: When a diesel engine drives atransmission to drive a fracturing plunger pump through a transmissionshaft, a large volume is occupied, a heavy weight is involved, thetransportation is restricted, and the power density is low;

(2) Environmental problems: During operations on a well site, thefracturing equipment driven by the diesel engine would generate enginewaste gas pollution and noise pollution. The noise exceeding 105 dBAwill severely affect the normal life of nearby residents;

(3) Cost inefficiency: The fracturing equipment driven by the dieselengine requires relatively high initial purchase costs and incurs highfuel consumption costs for unit power during operation, and the engineand the transmission also require very high routine maintenance costs.

The other driving mode is electric drive fracturing, specifically anelectric motor is connected to a transmission shaft or a coupling todrive the fracturing plunger pump to work. In other words, an electricmotor is used as the power source, a transmission shaft or a coupling isused as the transmission device, and a fracturing plunger pump is usedas the actuating element.

Although the electric drive fracturing has many advantages itself, thepower supply on fracturing well sites is the prerequisite forimplementation of electric drive fracturing. Generally, it is difficultto supply power for the fracturing well sites in that the power capacityon the well sites is too small to drive the whole fracturing unit, orthere are not any power networks at all on the well sites. Therefore, incommon electric drive fracturing sites, generators are generally used togenerate electricity. The most economical generation fuel is naturalgas, but the users employing natural gas need to rent or purchase gasgenerator sets. For a fracturing well site without power networks, thepower of the gas generator sets needs up to at least 30 MW. Purchasingsuch high-power gas generator sets is a great investment for customers.More importantly, in actual work progress, the accidental shutdown ofthe gas generator sets would cause the breakdown of the whole electricdrive fracturing unit, thus seriously affecting the working quality,even causing work accidents possibly.

Therefore, there is an urgent need for a new fracturing equipment tosolve the disadvantages of the above existing diesel engine-drivenfracturing and electric drive fracturing, thus better satisfying thedemands on the oil and gas field fracturing market globally.

SUMMARY

To overcome the deficiencies in the prior art, an objective of thepresent invention is to provide a turbine fracturing equipment, whichadopts a linear connection of the whole equipment and a special chassisdesign, so that the center of gravity is double lowered to guarantee itsstability and safety, the structure is simpler, the investment andoperation costs are decreased, the risk of total breakdown of thefracturing site is reduced, and the equipment has a good transmissionperformance and is suitable for continuous operation conditions withlong time and heavy load.

The objective of the present invention is achieved by the followingtechnical measures: a turbine fracturing equipment, including atransporter, a turbine engine, a reduction gearbox, a transmissionmechanism or transmitter, and a plunger pump, wherein an output end ofthe turbine engine is connected to one end of the reduction gearbox, theother end of the reduction gearbox is connected to the plunger pumpthrough the transmission mechanism, the transporter is used to supportthe turbine engine, the reduction gearbox, the transmission mechanismand the plunger pump; the transporter includes a chassis provided with atransport section, a bearing section and a lapping section which areconnected in sequence; while the turbine fracturing equipment is inworking state, the bearing section of the chassis can contact with theground, while the turbine fracturing equipment is in transport state,the bearing section of the chassis does not contact with the ground.

Further, the transporter includes wheels and axles, the wheels aredisposed at both ends of the axles, the axles are connected to thechassis, and the number of the axles is 3 or above.

Further, the axles are disposed at the transport section of the chassis.

Further, while the turbine fracturing equipment is in the working state,the bottom of the bearing section of the chassis is at the same level asthe bottom of the wheels.

Further, while the turbine fracturing equipment is in the transportstate, the lapping section assists in transporting the transporter underthe action of an external towing force.

Further, the bottom of the lapping section is provided with a bevelwhich is provided with a bulge, while the turbine fracturing equipmentis in the transport state, the bevel can be used in conjunction with anexternal towing equipment, the bulge assists in fixing the transporterand preventing the transporter from separating from the external towingequipment.

Further, the turbine engine is provided with an exhaust system on anopposite side of the reduction gearbox, the exhaust system includes anexhaust silencer and an exhaust duct, the exhaust silencer is connectedto an exhaust port of the turbine engine through the exhaust duct.

Further, the exhaust system, the turbine engine, the reduction gearbox,the transmission mechanism and the plunger pump are disposed in astraight line along the transmission direction of power.

Further, the transmission mechanism is a transmission shaft or acoupling.

Further, a hydraulic power unit is disposed on the transport section,the hydraulic power unit is used to drives the hydraulic system on theturbine fracturing semi trailer equipment.

Further, the hydraulic power unit is driven by a diesel engine or drivenby an electric motor.

Further, a cooling system is disposed on the transport section, thecooling system cools the oil used on the turbine fracturing equipment.

Further, the power of the plunger pump is 5000 hp or above.

Compared with the prior art, the present invention has the followingbeneficial effects: the turbine engine, the reduction gearbox, thetransmission mechanism and the plunger pump are connected in a straightline along the transmission direction of power to avoid excessivetransmission loss, thus ensuring efficient transmission performance. Theturbine engine itself has the advantages of small volume, light weightand high power density. For the same size and weight, the unit-power ofa turbine fracturing equipment is more than twice that of conventionaldiesel fracturing equipment. The turbine engine can be fueled by 100%natural gas directly, greatly reducing the use cost compared with thediesel consumption in diesel drive and the investment on gas generatorsets of electric drive fracturing equipment. Meanwhile, the turbinefracturing equipment are usually operated with the plunger pumps drivedone-to-one, unlike in electric drive fracturing equipment, a singlehigh-power gas generator set is used to drive multiple plunger pumps.That is to say, a turbine fracturing equipment is employed to distributethe failure risk of a single high-power gas generator onto each turbinefracturing equipment, avoiding that the failure of a single gasgenerating equipment causes the risk of breakdown of the whole set offracturing equipment. The special chassis design of the transporterallows the center of gravity of the whole equipment is further loweredon the basis of lowering the center of gravity by a linear connection,so that the stability and safety of the whole equipment are furtherenhanced no matter in a transportation transport state or in a workingstate.

The present invention will be described in detail below with referenceto the accompanying drawings and specific implementations.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a turbine fracturingequipment while in a working state.

FIG. 2 is a schematic structural diagram of a turbine fracturingequipment while in a transport state.

Wherein, 1. hydraulic power unit, 2. transporter, 3. exhaust silencer,4. exhaust duct, 5. turbine engine, 6. reduction gearbox, 7.transmission mechanism, 8. plunger pump, 9. tractor, 10. bevel, 11.bulge, 12. horizontal surface, 13. slope surface, and 14 diesel engine.

DESCRIPTION OF THE EMBODIMENTS

As shown in FIGS. 1 to 2, a turbine fracturing equipment, including atransporter 2, a turbine engine 5, a reduction gearbox 6, a transmissionmechanism 7 and a plunger pump 8, wherein the turbine engine 5 is thepower source for the power transmission system of the whole equipment,an output end of the turbine engine 5 is connected to one end of thereduction gearbox 6, the other end of the reduction gearbox 6 isconnected to the plunger pump 8 through the transmission mechanism 7;the transporter 2 is used to support the turbine engine 5, the reductiongearbox 6, the transmission mechanism 7 and the plunger pump 8; thetransporter 2 includes a chassis provided with a transport section, abearing section and a lapping section which are connected in sequence;while the turbine fracturing equipment is in a working state, thebearing section of the chassis can contact with the ground, while theturbine fracturing equipment is in a transport state, the bearingsection of the chassis does not contact with the ground. The chassis isfurther provided with components such as battery wires, a fuel tank, alubricating oil tank, a hydraulic oil tank and the like, providing oiland support for the up-loading components such as the turbine engine 5,the reduction gearbox 6, the plunger pump 8 and the like. The reductiongearbox 6 is used to slow down and increase the torque of the poweroutput of the turbine engine 5, and then drives the plunger pump 8 towork through the transmission mechanism 7.

In one embodiment, as shown in FIG. 1. the turbine fracturing equipmentfurther includes a vertical support 15 between the exhaust duct and theturbine engine, wherein the vertical support 15 stands on and in directphysical contact with a top surface of the chassis.

The transporter 2 includes wheels and axles, the wheels are disposed atboth ends of the axles, the axles are connected to the chassis, and thenumber of the axles is 3 or above, to ensure an adequate bearingcapacity.

The axles are disposed at the transport section of the chassis.

While the turbine fracturing equipment is in the working state, thebottom of the bearing section of the chassis is at the same level as thebottom of the wheels. The bottom itself of the bearing section is ahorizontal surface 12 plus a slope surface 13, while in the workingstate, the horizontal surface 12 at the bottom of the bearing sectionfully contact with the ground, increasing the stability of the equipmentin operations. The slope surface 13 allows the raised chassis to belifted off the ground for easy walking when the turbine fracturingequipment is in a transport state.

While the turbine fracturing equipment is in the transport state, thelapping section assists in transporting the transporter 2 under theaction of an external towing force.

The bottom of the lapping section is provided with a bevel 10 which isprovided with a bulge 11. While the turbine fracturing equipment is inthe transport state, the bevel 10 can be used in conjunction withexternal towing equipment, the bulge 11 assists in fixing thetransporter 2 and preventing the transporter 2 from separating from theexternal towing equipment. The external towing equipment may be atractor 9 and the like, and the bulge may be a traction pin.

The turbine engine 5 is provided with an exhaust system on an oppositeside of the reduction gearbox 6. The exhaust system includes an exhaustsilencer 3 and an exhaust duct 4, the exhaust silencer 3 is connected toan exhaust port of the turbine engine 5 through the exhaust duct 4. Theexhaust duct 4 is used to direct the exhaust of the turbine engine 5into the exhaust silencer 3, which can reduce the noise of the exhaust.

The exhaust system, the turbine engine 5, the reduction gearbox 6, thetransmission mechanism 7 and the plunger pump 8 are disposed in astraight line along the transmission direction of power. The linearconnection of the turbine engine 5, the reduction gearbox 6, thetransmission mechanism 7 and the plunger pump 8 along the transmissiondirection of power can avoid excessive transmission loss, thus ensuringefficient transmission performance. The turbine engine 5 itself has theadvantages of small volume, light weight and high power density. For thesame size and weight, the unit-power of a turbine fracturing equipmentis more than twice that of conventional diesel fracturing equipment. Theturbine engine 5 can be fueled by 100% natural gas directly, greatlyreducing the use cost compared with the diesel consumption in dieseldrive and the investment on gas generator sets of electric drivefracturing equipment. Of course, the turbine engine 5 can also use 100%fuel oil as the fuel, preferably natural gas, which can reduce more fuelcosts than fuel oil. Meanwhile, the turbine fracturing equipment areusually operated with the plunger pump 8 drived one-to-one, unlike inelectric drive fracturing equipment, a single high-power gas generatorset is used to drive multiple plunger pumps. That is to say, a turbinefracturing equipment is employed to distribute the failure risk of asingle high-power gas generator onto each turbine fracturing equipment,avoiding that the failure of a single gas generating equipment causesthe risk of breakdown of the whole set of fracturing equipment.

The transmission mechanism 7 is a transmission shaft or a coupling.

A hydraulic power unit 1 is disposed on the transport section, thehydraulic power unit 1 is used to drive the hydraulic system on theturbine fracturing equipment. The hydraulic system includes a hydraulicpump, a hydraulic motor, various valves, a hydraulic oil tank, ahydraulic oil radiator, and the like, (the hydraulic system is mainlyused to drive the fuel pump of the turbine engine 5, the starting motorof the turbine engine 5, the lubrication system at the power end of theplunger pump 8, the lubrication system of the reduction gearbox 6, andvarious oil radiators, and the like).

The hydraulic power unit 1 is driven by a diesel engine or driven by anelectric motor.

A cooling system is disposed on the transport section, the coolingsystem cools the oil used on the turbine fracturing equipment. The oilused includes the engine oil for the turbine engine 5, hydraulic oil,the lubricating oil for the plunger pump 8, the lubricating oil for thereduction gearbox 6, and the like.

The power of the plunger pump 8 is 5000 hp or above, the higher thepower of the plunger pump 8 is, the more suitable for lone-time andhigh-load continuous operation conditions.

It will be appreciated to persons skilled in the art that the presentinvention is not limited to the foregoing embodiments, which togetherwith the context described in the specification are only used toillustrate the principle of the present invention. Various changes andimprovements may be made to the present invention without departing fromthe spirit and scope of the present invention. All these changes andimprovements shall fall within the protection scope of the presentinvention. The protection scope of the present invention is defined bythe appended claims and equivalents thereof.

What is claimed is:
 1. A turbine fracturing equipment, comprising atransporter, a turbine engine, a reduction gearbox, a transmitter and aplunger pump, wherein an output end of the turbine engine is connectedto one end of the reduction gearbox, an other end of the reductiongearbox is connected to the plunger pump through the transmitter; thetransporter is configured to support the turbine engine, the reductiongearbox, the transmitter and the plunger pump; the turbine engine, thereduction gearbox, the transmitter, and the plunger pump are arranged ina single-file line, one end of the transmitter is directly connected tothe reduction gearbox and another end of the transmitter is directlyconnected to the plunger pump, and the transporter comprises a chassisprovided with a transport section, a bearing section and a lappingsection which are connected in sequence, wherein the transmitterconsists essentially of a transmission shaft or a coupling, and whereinin a plan view, the plunger pump on the chassis is completely within thelapping section.
 2. The turbine fracturing equipment according to claim1, wherein the transporter comprises a plurality of axles having wheelsinstalled at each end of the axles, and the axles are connected to thechassis.
 3. The turbine fracturing equipment according to claim 2,wherein the axles are disposed at the transport section of the chassis.4. The turbine fracturing equipment according to claim 2, wherein thetransporter comprises 3 axles.
 5. The turbine fracturing equipmentaccording to claim 1, wherein while the turbine fracturing equipment isin transport state, the lapping section is configured to connect thetransporter to an external tower.
 6. The turbine fracturing equipmentaccording to claim 5, wherein a bottom of the lapping section isprovided with a bevel which is provided with a bulge, and the bulge isconfigured to fix the transporter with the external tower in thetransport state.
 7. The turbine fracturing equipment according to claim1, wherein an exhaust system is located on an end of the turbine engineopposite to the output end of the turbine engine connected to thereduction gearbox, the exhaust system comprises an exhaust silencer andan exhaust duct, the exhaust silencer is connected to an exhaust port ofthe turbine engine through the exhaust duct.
 8. The turbine fracturingequipment according to claim 7, wherein the exhaust system, the turbineengine, the reduction gearbox, the transmitter and the plunger pump aredisposed in a same straight line along an axial transmission direction.9. The turbine fracturing equipment according to claim 7, furthercomprising a vertical support between the exhaust duct and the turbineengine, wherein the vertical support stands on and in direct physicalcontact with a top surface of the chassis.
 10. The turbine fracturingequipment according to claim 1, wherein a hydraulic power source isdisposed on the transport section, and the hydraulic power source isconfigured to drive a hydraulic system on the turbine fracturingequipment.
 11. The turbine fracturing equipment according to claim 10,wherein the hydraulic power source is a diesel engine or an electricmotor.
 12. The turbine fracturing equipment according to claim 1,wherein a cooling system is disposed on the transport section, thecooling system is configured to cool oil used on the turbine fracturingequipment.
 13. The turbine fracturing equipment according to claim 1,wherein a power of the plunger pump comprises 5000 hp.
 14. The turbinefracturing equipment according to claim 1, wherein a bottom of thehearing section comprises a horizontal surface plus a slope surfacebetween the horizontal surface and the transport section, and the slopesurface has an upward slope in a direction from the horizontal surfaceto the transport section, and wherein under condition of working state,the horizontal surface at the bottom of the bearing section isconfigured to fully contact with a flat ground and the slope surface atthe bottom of the bearing section is configured to be above the flatground.
 15. The turbine fracturing equipment according to claim 14,wherein the horizontal surface at the bottom of the bearing section isconfigured to be at a same level as a surface of the wheels touching aground under condition of working state.
 16. The turbine fracturingequipment according to claim 14, wherein under condition of transportstate, the slope surface at the bottom of the bearing section isconfigured to enable the chassis to be lifted off the ground fortransportation.
 17. The turbine fracturing equipment according to claim14, wherein the plunger pump is disposed directly on the lapping sectionof the chassis.
 18. The turbine fracturing equipment according to claim1, wherein the turbine engine is directly connected to and in directphysical contact with the reduction gear box.
 19. The turbine fracturingequipment according to claim 1, wherein the turbine engine has a turbineengine housing, the reduction gearbox has a reduction gearbox housing,and the turbine engine housing is directly connected to and in directphysical contact with the reduction gearbox housing.